docs: def set_line_value(self, context_type, value):
          """
          Set value defined on this line ('line_envs'/'line_labels')
          and update 'envs'/'labels'.
  
          :param context_type: "ENV" or "LABEL"
          :param value: new value for this line
          """
          if context_type.upper() == "ENV":
              self.line_envs = value
              self.envs.update(value)
          elif context_type.upper() == "LABEL":
              self.line_labels = value
              self.labels.update(value)